Donald Mackay, 11th of Strathnaver

Donald Mackay, 11th of Strathnaver (died 1550), was the eleventh chief of the ancient Clan Mackay, a Scottish clan of the Scottish Highlands.

Early life Donald Mackay was the second eldest son of Iye Roy Mackay, 10th of Strathnaver, and his wife who was the daughter of Norman, son of Patrick O'Beolan of Carloway, Lewis. Donald's elder brother, John Mackay, 11th of Strathnaver, died in 1529 without legitimate male issue and therefore Donald was able to succeed him as chief of the Clan Mackay.

Alliance with the Clan Forbes and Clan Campbell In around 1529 Donald Mackay of Strathnaver assisted the Master of Forbes (of Clan Forbes) and Sir John Campbell of Cawdor during a feud in which Alexander Seaton of Meldrum was killed. The book Conflicts of the Clans describes the Battle of Alltan-Beath in which the Mackays were subsequently defeated by the Gordons of Sutherland, although this battle is not specifically mentioned by either the Mackay historians or in the 1813 publication of Sir Robert Gordon's manuscript. According to Sir Robert Gordon, Donald Mackay was ultimately brought to the Gordon Earls of Huntly and Sutherland and upon his submission was, at their command, imprisoned in Foulis Castle.

Family Donald Mackay, 11th of Strathnaver, married Helen, daughter of Alexander Sinclair of Stempster, second son of William Sinclair, 2nd Earl of Caithness and chief of Clan Sinclair. Donald Mackay and Helen Sinclair had the following children: Iye Du Mackay, 12th of Strathnaver, heir and successor as chief of the Clan Mackay. A daughter, who married John Mackay, 4th chieftain of the Mackay of Aberach branch of the clan. Florence Mackay, who married Neil MacLeod of Assynt.

Donald Mackay, 11th of Strathnaver died towards the end of 1550.